"Throw Scritters at any slick surface and watch them come to life. They creep and crawl, as they walk down the wall!
Scritters work best on slick surfaces, like windows and refrigerators. Scritters aren't made for every surface, may stain or damage certain surfaces. Test in an inconspicuous spot before using."
Dimensions (per ball): approx. 0.75" diameter / approx. 1.9cm diameter